udev_device_get_syspath(3) — Linux manual page


UDEV_DEV...T_SYSPATH(3)  udev_device_get_syspath UDEV_DEV...T_SYSPATH(3)

NAME         top

       udev_device_get_syspath, udev_device_get_sysname,
       udev_device_get_sysnum, udev_device_get_devpath,
       udev_device_get_devnode, udev_device_get_devnum,
       udev_device_get_devtype, udev_device_get_subsystem,
       udev_device_get_driver, udev_device_get_udev,
       udev_device_get_is_initialized, udev_device_get_action - Query
       device properties

SYNOPSIS         top

       #include <libudev.h>

       const char
                                           *udev_device_get_syspath(struct udev_device *udev_device);

       const char
                                           *udev_device_get_sysname(struct udev_device *udev_device);

       const char
                                          *udev_device_get_sysnum(struct udev_device *udev_device);

       const char
                                           *udev_device_get_devpath(struct udev_device *udev_device);

       const char
                                           *udev_device_get_devnode(struct udev_device *udev_device);

       dev_t udev_device_get_devnum(struct udev_device *udev_device);

       const char
                                           *udev_device_get_devtype(struct udev_device *udev_device);

       const char
                                             *udev_device_get_subsystem(struct udev_device *udev_device);

       const char
                                          *udev_device_get_driver(struct udev_device *udev_device);

       struct udev
                                         *udev_device_get_udev(struct udev_device *udev_device);

       struct udev_device
                                                  *udev_device_get_parent(struct udev_device *udev_device);

       struct udev_device
                                                                         *udev_device_get_parent_with_subsystem_devtype(struct udev_device *udev_device,
                                                                         const char *subsystem,
                                                                         const char *devtype);

                                          udev_device_get_is_initialized(struct udev_device *udev_device);

       const char
                                          *udev_device_get_action(struct udev_device *udev_device);

RETURN VALUE         top

       On success, udev_device_get_syspath(), udev_device_get_sysname(),
       udev_device_get_sysnum(), udev_device_get_devpath(),
       udev_device_get_devnode(), udev_device_get_devtype(),
       udev_device_get_subsystem(), udev_device_get_driver() and
       udev_device_get_action() return a pointer to a constant string
       that describes the requested property. The lifetime of this
       string is bound to the device it was requested on. On failure,
       each function may return NULL.

       On success, udev_device_get_devnum() returns the device type of
       the passed device. On failure, a device type with minor and major
       number set to 0 is returned.

       udev_device_get_udev() always returns a valid pointer to the udev
       context that this device belongs to.

       On success, udev_device_get_parent() and
       udev_device_get_parent_with_subsystem_devtype() return a pointer
       to the parent device. No additional reference to this device is
       acquired, but the child device owns a reference to such a parent
       device. On failure, NULL is returned.

       On success, udev_device_get_is_initialized() returns either 1 or
       0, depending on whether the passed device has already been
       initialized by udev or not. On failure, a negative error code is
       returned. Note that devices for which no udev rules are defined
       are never reported initialized.

HISTORY         top

       udev_device_get_syspath(), udev_device_get_sysname(),
       udev_device_get_sysnum(), udev_device_get_devpath(),
       udev_device_get_devnode(), udev_device_get_devnum(),
       udev_device_get_devtype(), udev_device_get_subsystem(),
       udev_device_get_driver(), udev_device_get_udev(),
       udev_device_get_is_initialized(), and udev_device_get_action()
       were added in version 221.

SEE ALSO         top

       udev_new(3), udev_device_new_from_syspath(3),
       udev_device_has_tag(3), udev_enumerate_new(3),
       udev_monitor_new_from_netlink(3), udev_list_entry(3), systemd(1)

COLOPHON         top

       This page is part of the systemd (systemd system and service
       manager) project.  Information about the project can be found at
       ⟨http://www.freedesktop.org/wiki/Software/systemd⟩.  If you have
       a bug report for this manual page, see
       This page was obtained from the project's upstream Git repository
       ⟨https://github.com/systemd/systemd.git⟩ on 2024-06-14.  (At that
       time, the date of the most recent commit that was found in the
       repository was 2024-06-13.)  If you discover any rendering
       problems in this HTML version of the page, or you believe there
       is a better or more up-to-date source for the page, or you have
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       (which is not part of the original manual page), send a mail to

systemd 257~devel                                UDEV_DEV...T_SYSPATH(3)

Pages that refer to this page: udev_device_has_tag(3)udev_device_new_from_syspath(3)systemd.directives(7)systemd.index(7)